问题补充：
—I can not use the new mobile phone. Could you please show me.
—Sure.
Awhat to do that
B. how to do it
C. how to do
D. what to do it
答案：
A. what to do that
(答案→)B. how to do it
C. how to do
D. what to do it
解析：句意：--我不会用这部新手机。请你给我介绍如何去使用它。--当然可以。分析：考查宾语从句的特殊形式，做什么为what to do ; 如何做某事how to do it.联系句意：展示给我如何运用手机。故选B
